tools: merge nfd-status into nfdc

nfd-status functionality is accessible through `nfdc legacy-nfd-status` subcommand,
and nfd-status is replaced with a shell script calling this subcommand.

refs #3749

Change-Id: Iab03f3bc9ddb4333a0b6ca5fb9c67f54e9960ab4
diff --git a/tools/nfdc/status-report.cpp b/tools/nfdc/status-report.cpp
new file mode 100644
index 0000000..c687147
--- /dev/null
+++ b/tools/nfdc/status-report.cpp
@@ -0,0 +1,80 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2016,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "status-report.hpp"
+#include "format-helpers.hpp"
+
+namespace nfd {
+namespace tools {
+namespace nfdc {
+
+uint32_t
+StatusReport::collect(Face& face, KeyChain& keyChain, Validator& validator, const CommandOptions& options)
+{
+  Controller controller(face, keyChain, validator);
+  uint32_t errorCode = 0;
+
+  for (size_t i = 0; i < sections.size(); ++i) {
+    Module& module = *sections[i];
+    module.fetchStatus(
+      controller,
+      [] {},
+      [i, &errorCode] (uint32_t code, const std::string& reason) {
+        errorCode = i * 1000000 + code;
+      },
+      options);
+  }
+
+  this->processEvents(face);
+  return errorCode;
+}
+
+void
+StatusReport::processEvents(Face& face)
+{
+  face.processEvents();
+}
+
+void
+StatusReport::formatXml(std::ostream& os) const
+{
+  xml::printHeader(os);
+  for (const unique_ptr<Module>& module : sections) {
+    module->formatStatusXml(os);
+  }
+  xml::printFooter(os);
+}
+
+void
+StatusReport::formatText(std::ostream& os) const
+{
+  for (const unique_ptr<Module>& module : sections) {
+    module->formatStatusText(os);
+  }
+}
+
+} // namespace nfdc
+} // namespace tools
+} // namespace nfd